Gas Combustion Heating Smoking Article

ABSTRACT

A gas combustion heating smoking article with puff mouth piece is provided. The gas heating smoking article includes a smoking article housing, a combustion device, a plurality of cigarette consumable items or a plurality of aerosol generation consumable items. The combustion device uses propane or butane premixed with air before combustion, heat generated from the combustion is used to bake the cigarette consumable items or aerosol generation consumable items. The present invention provides a low temperature smoking article using gas as energy, which generates quite similar taste of normal cigarette, to people who have difficulty to quite smoke. Because there is no cigarette burning, this smoking article can reduce many harmful products compared to the traditional cigarette due to its tobacco burning and heat degradation, like tar, carbon monoxide, ash, etc.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a divisional application of a Non-Provisionalapplication Ser. No. 15/579,584, filed on Dec. 4, 2017, which is basedon and claims priority to the national phase entry of InternationalApplication No. PCT/CN2017/071902, filed on Jan. 20, 2017, which isbased upon and claims priority to Chinese Patent Application No.CN201621111124.8, filed on Oct. 10, 2016, the entire contents of whichare incorporated herein by reference.

TECHNICAL FIELD

This invention relates to a smoking article, especially a kind of gasheating smoking article.

BACKGROUND

Ordinary tobacco product, for example cigarette, is made by wrappingcigarette paper around cut tobaccos in the shape of round bar or rod.More often than not, a filtering device, for example a filter tip madeof cellulose acetate, is attached to the smoking end of cigarettes. Whenthe smoker lights a cigarette and puffs, the cut tobaccos in cigarettewill get burnt and carbonized to form a flame-free hot combustion zone.The combustion zone, gradually expanding backward, will give rise tohigh-temperature air flow which exerts a carbonization effect onneighboring cut tobaccos. Besides, the high-temperature air flow willvaporize the volatiles contained in the cut tobaccos and generatevisible aerosol, namely whitish and lightly-bluish vapor, when suchvolatiles are cooled by the incoming cooling air. The nicotine containedin such vapor will be breathed into human blood system throughrespiratory tract as well as pulmonary alveoli and then excite cerebralnerve cells, exposing smokers to the pleasant feeling exclusive tonicotine. However, the decomposition and double-decompose reactions ofvarious chemicals from tobaccos will give rise to large quantities oftar and diversified harmful substances. Hence it comes as a constantchallenge to cigarette manufacturers to bring smokers the pleasantfeeling created by mildly-harmful nicotine while minimizing tar andhazardous substances. To significantly improve the public healthenvironment and weaken the harm of tobaccos and the resulting lawconflicts, great efforts are being made in relevant technologicalimprovements and inventions. R.J Reynolds Tobacco Company has described,in a number of technological patents, the low-tar cigarettes withsegment-based combustion element fueled by carbon. Also relevanttechnologies have been disclosed in such USA patents as U.S. Pat. Nos.9,220,301, 9,149,072 and the U.S. Pat. No. 9,185,939 of Philip Morse.

The present inventor also applied to patents of electronic cigarettepowered by battery, including the Chinese utility model patentsZL03211903.8, ZL03212882.7 and ZL200420031182.0, etc. in 2003 and 2004.Patent from Philip Morse U.S. Pat. No. 5,880,439 disclosed an electricalpowered ceramic heating device, for lighting and heating cigarette.These patents are all focusing on providing low tar cigarette withtraditional cigarette's advantages to smokers, and reduce incompletecombustion and pyrolysis products. So, e-cigarette begins standing outon global cigarette market, recent e-cigarette products are welcomed bythe world due to its free tar, easy to use. There are 10 million peopleusing e-cigarette. However, there are still some technic problems ofe-cigarette without ideal solution, like the problem from lithiumbattery, heating element over heating causing carbon degradation makesit is impossible to add tobacco extraction to liquid, this limited thetaste of e-vapor, makes long term smokers will not accept it.

Targeting the lighting method of cigarette, China utility model patentCN204682514U disclosed a filter mouth piece with lighter, by asupporting structure combined cigarette and lighter together, for smokersmoking. However, cigarette need lighter to ignite directly, harmfulcombustion products filtered. China invention patent CN1328992Cdisclosed a smoking simulation article and its fuel units, using cleanfuel to combust, like ethanol, methyl alcohol, isopropanol or propylalcohol, etc. Obviously, enjoy the happiness of nicotine but reduce thedamage of tar and other harmful product is a problem of tobaccocompanies. To significantly improve the public health environment,reduce the damage of tobacco and legal conflicts, related technicalimprovement and science invention are all working on these problems.People are looking for a tobacco substitution which could reduce theharmful products from combustion, and provides a good, convent smokingexperience.

SUMMARY

To solve the problems mentioned above, this invention disclosed acigarette substitute which is safer, no need battery or charge. Thisinvention is a low temperature cigarette heated by premixed gas flame.Core idea of this invention is using the heat generated by gascombustion baking cigarette consumable items or heating aerosolgeneration consumable items, and generate aerosol very similar to normalcigarette.

To archive the purpose above, this invention provides followingsolution:

A gas heating smoking article, with puff mouth piece, such smokingarticle has smoking article housing, combustion device on housing,cigarette consumable items or aerosol generation consumable items; suchcombustion device using propane and butane gas premixed with air as fuelto generate heat, such heat is for baking cigarette consumable items orheating aerosol generation consumable items.

Selected baking cigarette consumable items could be: cigaretteconsumable items could be normal cigarette, or cigarette rolled with oneof following materials, heat resistance paper, heat resistance member,and metal foil. Such cigarette consumable item is placed in the bakingchamber inside the housing, such housing is designed with inlet air holeand puff mouth piece at each side; baking chamber designed at least onecombustion gas spread path and exhaust; such premixed gas flame fromcombustion device is targeting the high-temperature gas hole of thebaking chamber which connected to the combustion gas spread path, tobake the cigarette consumable items; there is no air flow path betweenbaking chamber and puff mouth piece.

Furthermore, such combustion device can move along the cigaretteconsumable items, by ignite premixed gas flame multiple times to bakethe cigarette consumable items section by section. Optimized, suchcigarette consumable items baking section should be 3-20 sections,corresponding high-temperature spread path should also be 3-20.

Furthermore, such baking chamber is divided into multiple separatechambers by partitions, such partitions designed with a space forcigarette consumable items; there is high-temperature gas spread pathand exhaust gas exit for each separate chambers, gap between cigaretteconsumable item and the housing of the smoking article is thehigh-temperature gas spread path; combustion device is attached to theoutside of the housing, it can move along the smoking article step bystep, and at each stop place high-temperature gas inlet hole to separatechambers, single combustion and step motion of the combustion device iscontrolled manually.

Furthermore, the combustion device is connected the an escapement systemto let it move step by step, such escapement system is located outsidethe housing and each stop point makes the combustion device targeting atleast one of the high-temperature gas inlet holes.

Furthermore, there is a manual switch controls the combustion device andescapement system or two switches control these separately.

Furthermore, there is a lid on the housing provides an easy way for userto replace consumable items.

Furthermore, the high-temperature gas spread path could be filled withmetal foam or metal fiber, which could let the premixed flame andpremixed flameless combustion coexistence.

Furthermore, the combustion device includes fuel chamber, ignitiondevice, gas refill port, inlet air control switch and premix chamber,such premix chamber designed with combustion-supporting air inlet andnozzle, the premixed flame spurt out of the nozzle, optimized, the flameshould targeting the high-temperature hole of the baking chamber.

Furthermore, the nozzle is designed with metal wire to stabilize theflame and prevent sudden flameout.

Furthermore, such premix chamber is designed with flame muffler net, toprevent housing damage or housing overheat.

Furthermore, the premix chamber is made of heat resistance ceramic, withmultiple inlet air flow hole at the side; or with wave shaped dual metalsheet, which could extended and press to close an air flow valve,multiple inlet air flow holes at the side.

consumable item inserted into silicon. Air flows into the spiral airflow path through opening, the spiral air flow path attached with heatreleasing part of heat collector to heat air flows in, high temperatureair flows out of the spiral air flow path and targeting cigaretteconsumable item to heat and generate aerosol.

If using aerosol generation consumable items, the optimized solutionshould be: the housing is designed with combustion zone and aerosolgeneration zone, such combustion zone has at least one inlet air holeand exhaust hole; the aerosol generation zone has an inlet air hole forpuffing; there is no air flow path between combustion zone and aerosolgeneration zone; such combustion device is located in combustion zone,the premixed gas combusts in a heat collection system; the aerosolgeneration consumable item is placed in the aerosol generation zone;heat collected by the heat collection system is released to the aerosolgeneration zone and generate aerosol.

Furthermore, the aerosol generation consumable items have liquidconduction system, such liquid conduction system is connected to heatreleasing units.

Furthermore, the heat collection system is cellular structure, whichpremixed gas combust in it with or without flame, the heat collectionsystem designed multiple air flow holes on its side wall, there is aheat release unit at its close end.

Furthermore, the heat collection system is designed as multi-fence metalcolumn, filled with metal foam metal column or filled with metal fibermat metal column. Optimization is, between the heat collection systemand housing there is a flame muffler net.

Furthermore, the combustion device includes fuel chamber, ignitiondevice, air flow adjust valve, gas refill port, control switch andpremix chamber, such premix chamber designed with air inlet hole andnozzle, premixed gas flame connected to the heat collection systemthrough the nozzle. In the system, the premix chamber is made of heatresistance ceramic with multiple gas exhaust; or with wave shaped dualmetal sheet, which could extended and press to close an air flow valveafter heated, multiple gas exhaust at the side.

Furthermore selectively, the nozzle is designed with metal wire tostabilize the flame and prevent sudden flameout.

From the perspective of product design, that the combustion device andaerosol generation consumable items are coaxial designed, the smokingarticle is rod like; or the combustion device is protrude out of thehousing of aerosol generation consumable items, the smoking article ispistol like.

This invention also provides a simplified smoking article design, whichincludes smoking article housing, combustion device on the housing,cigarette consumable items; such combustion device using propane orbutane premixed with air before combustion, heat from combustiontransferred to air path to heat air inside the air path, the hightemperature air outlet targeting cigarette consumable items to heat itand generate aerosol, in this invention, combustion device and cigaretteconsumable item placed in combustion zone and aerosol generation zone,there is no air flow between them.

Furthermore, such combustion device has heat collection unit, premixedair combusts in heat collection unit, generate heat to heat air insidethe air flow path.

Furthermore, air flow path is made of heat conduction material in spiralshape, its inlet air hole connected to the housing to outside air.

Furthermore, inside the aerosol generation zone designed with heatresistant layer prevent combustion and store heat.

Furthermore, end of smoking article housing designed with silicon tubeto insert cigarette consumable items, puff mouth piece of cigaretteconsumable item is outside the silicon tube.

Optimized, the end part of the smoking article designed with removablepuff mouth piece, such cigarette consumable items insert into housing orplaced in puff mouth piece.

By using aerosol generation consumable item, this invention provides asimplified solution, similar combustion device, different heatcollection device. A smoking article, includes smoking article housing,combustion device attached on the housing, aerosol generation consumableitem; such combustion device using propane or butane premixed with airbefore combustion, heat generated from the combustion is transferred toaerosol generation consumable item; the housing designed with combustionzone and aerosol generation zone. Such combustion zone placed withsupporting air inlet and at least one waste gas exhaust for exhaustingcombustion waste gas. Such aerosol generation zone placed with puff airinlet path and puff aerosol outlet path. There is no air flow betweenthe combustion zone and aerosol generation zone, combustion deviceplaced in combustion zone, premix gas combusts in premix chamber,aerosol generation consumable item is in aerosol generation zone. Heatfrom combustion transfers to aerosol generation consumable item by heatcollection device to generate aerosol, such heat collection devicelocated on aerosol generation consumable item. In this design,combustion device includes combustion chamber, ignition device, gas flowadjust valve, gas refill port, control switch and premix chamber. Suchpremix chamber designed with support air inlet and nozzle, flame mixedwith air conducted to heat collection device through such nozzle.

Furthermore, the heat collection device separates the combustion zoneand aerosol generation zone. Heat resistance fiber of such aerosolgeneration consumable item closely attached on heat collection device,to generate aerosol from the aerosol generation material absorbed by theheat resistance fiber.

Optimized, the heat collection device is made of heat resistance metalfoil, and shaped in a structure which could attach close to the heatresistance fiber, located in the end of aerosol generation consumableitem housing. Especially, the heat collection device designed with ahollow, inner side of the hollow is shaped closely attached on heatresistance fiber. Specifically, the heat collection device is in coneshape, such heat resistance fiber closely attached on the inner side ofthe heat collection device. The point of the heat collection device isplaced close to the premix chamber.

Furthermore, the heat collection device is sealed on aerosol generationconsumable item housing by heat resistance soft part. When insertingaerosol generation consumable item into the smoking article's housing,deformation of the soft part will compress the heat collection device,to make it closely attached on the heat resistance fiber to transferheat.

Furthermore, the aerosol generation consumable item and heat collectionform one consumable item together. Such aerosol generation consumableitem designed with air inlet path. One side of the air inlet pathconnected to outside, the other side connected to the hollow betweenheat collection and the housing.

Furthermore, the aerosol generation consumable item designed with puffmouth piece connected to puff air outlet, in one piece or separately.

In this invention, since there is no tobacco burning or heating aerosolgeneration materials, this could reduce or prevent harmful products fromtobacco burning and degradation, there is no tar, carbon monoxide andash, no secondhand smoke issue, no environmental pollution, thus willsignificantly reduce the damage from traditional tobacco. Consideringthe propane, butane gas combustion process could produce waste gas, thistechnical solution designs single puffing air flow path which isisolated with combustion waste gas path, in the baking chamber andconsumable items chamber, to prevent the health of smokers.

BRIEF DESCRIPTION OF THE DRAWINGS

For better understanding of the following figures, reference to theapplication embodiments is recommended. These illustrative figures donot serve as restrictions to technological solutions of the invention atall. In particular, structures, ratio, sizes are only for instructionfor people familiar with the technology, reading and understanding,there is no limit to the invention's implementation.

FIG. 1A is a section view of this invention gas heating smoking article,the smoking article could insert cigarette in its housing, and one pushbutton controls combustion device and stepping motion;

FIG. 1B is a section view from FIG. 1A A-A direction; there is cigaretteconsumable items in the housing;

FIG. 2 is a cigarette consumable items illustration;

FIG. 3 is an illustration of rack in the escapement system of thisinvention;

FIG. 4 is an illustration of hole-rack in the escapement system of thisinvention;

FIGS. 5A, 5B, 5C, 5D and 5E are segment sketches of the escapementsystem for one complete stepping motion;

FIG. 6 is an illustration of tooth in the escapement system of thisinvention;

FIG. 7 is an illustration of combustion device nozzle and stop valve ofthis invention;

FIGS. 8A and 8B are two illustrations of wave shaped metal sheet mixingchamber of this invention;

FIGS. 9A and 9B are two illustrations of flame muffler in thisinvention;

FIG. 10 is an illustration of the housing, in the figure there is aremovable lid, but no combustion device;

FIG. 11 is an illustration of example 2; in the figure the housingfilled with cigarette consumable item, and controlled by differentbuttons for combust and stepping.

FIGS. 12A, 12B, 12C, 12D and 12E are segment sketches of the escapementsystem for one complete stepping motion;

FIGS. 13A and 13B are two illustrations of two kinds of premixingchamber of this invention;

FIG. 14 is an illustration of example 3; in this figure the housing isfilled with aerosol generation consumable items, smoking article is rodlike;

FIG. 15 is an illustration of heat resistance fiber aerosol generationconsumable item in this invention;

FIGS. 16A, 16B, 16C and 16D are illustrations of heat collector, in thefigure there are four kinds of different material, structure heatcollectors.

FIG. 17 is an illustration of example 4; in the figure the housing isfilled with aerosol generation consumable item, smoking article ispistol like.

FIG. 18 is an illustration of heat resistance fiber mat aerosolgeneration consumable item.

FIG. 19 is an illustration of a simplified solution with aerosolgeneration consumable item, in this figure, heat collection device andaerosol generation consumable item are in one piece.

FIG. 20 is an illustration of aerosol generation consumable item, inthis figure, heat collection device and aerosol generation consumableitem are in one piece.

FIG. 21 is an illustration of simplified smoking article design,including spiral air flow path.

FIG. 22 is a 3D illustration of spiral air flow path.

FIG. 23 is an illustration of simplified smoking article design,including spiral air flow path.

FIG. 24 is an illustration of removable puff mouth piece assembly.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The following drawings and specific embodiments will describe thepresent invention in detail.

For the terms used herein, cigarette consumable items refers to anyfilling material used in the smoking articles, particular thecigarettes, which can be either the conventional material, such asnormal tobacco, nontobacco plant, signal or hybrid carbon fuel material,there is no limitation of materials in this invention, and there is nolimitation of manufacture process and supporting materials. In thisinvention, traditional tobacco materials like cut tobacco, brokentobacco and tobacco particles, or other special processed tobacco, likebeing dry distillation or extracted of tobacco leaf (of course bychanging the distillation or extraction level could provide differenttobacco taste), low nitrosamine content tobacco, low tar tobacco,protein removed tobacco, low protein carbonized processed tobacco, etc.also can add PG, VG, nicotine, tobacco extract, tobacco flavor, ethanolmay apply one or more compositions, among tobacco flavors, likesweeteners, aloes, mint, licorice, essence, etc., could be used tochange the taste or flavor of cigarette. Carbon fuel material is porouscarbide, solid carbon fuel like charcoal rod, porous carbide herein iscarbide made from tobacco leaf, tobacco artificial sheet, by hightemperature vacuum distillation partially or completely. Currently,solid carbon rod fuel materials have been commercialized and could becustomized and sell, like Premier brand released in 1988 and Eclipsereleased in 1995 from R.J. Reynolds tobacco are heat-not-burn tobaccoproducts. Apparently, in this invention, cigarette consumable items areworking as one time products, it could be traditional cigarette, ortobacco rolled with heat resistance paper, member and aluminum foil. Theoutside of the cigarette could apply a high temperature baking materialas packing, however the packing is the focusing point of this invention,so for examples blow will using aluminum foil, but there is nolimitation for this invention.

Aerosol generation consumable items, aerosol generation material refersto liquid which form aerosol after heating and cooling, any liquid incurrent tobacco product could be applied, like liquid in e-cigarette. Aswe known, liquid could be categorized into two classes: with nicotineand without nicotine, main composition are PG, VG, nicotine, tobaccoextract, tobacco flavor, ethanol may apply one or more compositions,among tobacco flavors, like sweeteners, aloes, mint, licorice, essence,etc., could be used to change the taste or flavor of cigarette;optimized, to fulfill needs, can also add appropriate nicotine and/ortobacco extracts, to replace traditional cigarette products. Aerosolgeneration material is usually placed in proper container, and conductedby good liquid conduction material like fiber mat, fiber wick consistreplaceable or liquid refillable consumable items. In currenttechnology, aerosol generation consumable items are wildly used ine-cigarette, thousands of recipes; there is no limitation in thisinvention.

Combustion device refers to combustion device using propane gas orbutane gas premixed with air to generate flame, ignition and combustionstructure is similar to premix lighter. The theory of premix lighter ispremix gas with air then combust. Main parts of combustion device are:ignition device and gas storage tank, ignition device can generate andshoot spark to combustion zone to generate flame. Common ignitiondevices are: piezoelectric ceramic element, magnetic inductance andbattery, etc. By using piezoelectric ceramic element, for example,applying mechanical stress on piezoelectric ceramic will cause theelement's internal chargers' center change and polarize the element andgenerate free chargers at both sides of the element. So once thepiezoelectric ceramic element being compressed, it could convertmechanical energy to electrical energy, and release high voltage sparkat a sharp point to ignite gas. Technicians in this field shouldunderstand, the premix lighter is a mature technology. This inventionhas no limitation to premix lighter, only use it as a combustion devicefor baking cigarette, will do some necessary modification on itsappearance, premix chamber, nozzle and cooperate structure with smokingarticles.

Filtering element placed in the cigarette consumable item's puff area orin front of puff mouth piece, filtering element could be used forremoving tar and other harmful materials in the smoke, reduce theuncomfortable feel after puff, typical filtering material is made ofacetate fiber, polyester, polypropylene mesh. Of course there are somefilters with special functions and structures. This invention has nolimitation to filters' structure, material and function.

The main idea of this invention is providing a cigarette substitute,with propane gas or butane gas as energy, premixed flame to heat lowtemperature cigarette, and heat from combustion is for baking cigaretteconsumable items or aerosol generation consumable items, and generatessmoke similar to traditional cigarette.

Applying cigarette consumable items in the smoking article need designreasonable baking chamber in the smoking article. Depends on the lengthof the consumable item, there could be 1 or more baking chamber,optimized 3-20 baking chamber, the purpose of the baking chamber ismatch up smoker's smoking habit and rhythm, also bake the cigaretteconsumable item as uniform as possible. For baking chamber, since thepropane gas or butane gas produce waste gas during combustion, shouldplace waste gas emission outlet to the outside world.

As shown in FIGS. 1A and 1B, a low temperature smoking article, includeshousing 1, rod shape cigarette consumable item 2 and combustion device3, smoking article housing is basically made of heat resistancematerial, like heat resistance ceramic, one side with an opening forinserting cigarette consumable items, this opening also works ascombustion supporting air inlet, the other side of the smoking articleis designed as a mouth piece 4, or connected to a removable mouth piece4, the mouth piece designed with a puff hole 41. Combustion device 3connected to the smoking article's housing by a step escapement system.Ignition of combustion device 3 and step moving of step escapementsystem controlled by same push button 303. As shown in FIG. 2, cigaretteconsumable item 2 is rolled by aluminum foil 20 and tobacco material 21,one side is the filter. If apply removable mouth piece 4, the filtercould place in the mouth piece.

Inside the smoking article's housing 1, there are baking chambers 11,separated by partitions 12, all these partitions have reserved withcenter holes for inserting cigarette consumable items. When insertedwith cigarette consumable items 2, each baking chamber 11 is a sealedspace, each baking chamber 11 designed a high-temperature gas inlet hole13 and waster gas outlet hole 14, also the gap between the cigaretteconsumable item 2, the smoking article's housing 1 and the partition 12is a high-temperature gas separation path 7, to realize the uniformbaking of the cigarette consumable items. Optimized, thehigh-temperature gas separation path 7 could be designed in 3 to 20's,which means the cigarette consumable item 2 is divided into 3 to 20sections for baking. Furthermore optimized, to increase the heatefficiency metal fiber or metal foam could be add into thehigh-temperature gas separation path 7, let the premixed flame andpremixed flameless combustion coexistence.

One side of combustion device 3 is placed with liquid propane or butanegas tank 302 and the tank has gas charging valve and gas flow adjustvalve, the other side of the gas tank 302 is placed with a push button303 and stop valve 304, stop valve 304 connected to gas nozzle 305, gasnozzle 305 placed in premix chamber 80 and close to high voltageignition wire 307, push button 303 connected with piezoelectric ceramicor high frequency device 308 through high voltage ignition wire 307 topremix chamber 80.

Step escapement system is placed on the smoking article's housing; mainpurpose is to realize the step movement of combustion device on thehousing. Control a device moving in steps is a mature technology; thereis no limitation for this design. Connection between housing 1,combustion device and step escapement device could apply any currenttechnology. In this invention, to provide a good experience, the pushbutton 303 on combustion device controls not only the single ignitionbut also the step movement of the escapement system. In FIG. 3, the rack501 in the escapement system is a long strip plate with tooth, placingon the housing 1, at each stop point, the nozzle 803 of the premixchamber 80 on the combustion device facing each high-temperature gasinlet 13. FIGS. 5A, 5, 5C, 5D and 5E are the illustration of one stepmovement of the escapement system, these figures are only for illustratethe step movement; there is no limitation for the escapement system. Byapplying a force on push button 303, connecting rod 505 will presspiezoelectric ceramic 308 and pawl 502, piezoelectric ceramic triggered,pawl 502 move towards next teeth, at the same time the connecting rod505 and metal sheet 309 push stop valve 304, so, combustion gas isejected and ignited, combustion device moves to next stop point on rack501. In FIG. 6 illustrates the structure of pawl 502, it has an activepawl shaft 503. As one option, in FIG. 4, in the escapement system canreplace the step rack to rack with position holes 511 long strip plate510.

In FIGS. 8A and 8B, premix chamber 80 working as a chamber for mixingair and combustion gas could be made of metal, optimized using dualmetal sheet material, side wall 801 of premix chamber designed with airinlet hole 802, and designed curved stable heating wire 804 at the flamenozzle 803. Flame stable wire 804 could prevent sudden flame out when inhigh temperature. Described dual metal sheet material also called heatdual metal sheet, which means the shape of the composite material couldbe change by temperature. Because the thermal expansion coefficient ofeach layer is different, when temperature changes, shape change ofactive layer is greater than passive layer, thus makes the dual metalsheet curve to the passive layer, the change in the curvature of thecomposite material to produce deformation. In this example, to preventover heat, premix chamber 80 applies wave shaped dual metal sheet. Ifthere generate too much heat the dual metal sheet will expand by heatand press the stop valve to reduce the gas ejection. As an optimized, inFIGS. 9A and 9B, in above mentioned example, around the premix chamber80 placed with flame muffler net 9. Premix flame nozzle 803 connected toone of many high-temperature gas separate path 7 throughhigh-temperature gas hole 13 on baking chamber. Wasted gas fromcombustion exhausted from waste gas 14 opposite high-temperature gashole 13. Cigarette consumable item 2 in baking chamber 11 will be bakedand generate aerosol, aerosol will be puffed through the cigaretteconsumable item, filter 23 and mouth piece 4.

As one option, in FIG. 10, for a better solution to replace cigaretteconsumable items, there is a removable lid 15 designed on housing 1. Theconnection could be pin joint, socket, etc. Removable lid 15 designedwith waste gas outlet hole 14. The external shape of housing 1 isdepends on product design, combustion device and step escapement systemconnection, beauty and function, there is no limitation on this.

By pressing push button 303 continually, pawl 502 moves around pawlshaft 503, the device moves along one tooth on rack 501, to complete onestep movement. At the same time, the push button 303 also moves stopvalve 304 and piezoelectric ceramic 308, to complete ignition process.At every step movement stop point, nozzle on combustion device 3 alwaysfacing a baking chamber's high-temperature hole 13. Before puffing,press push button 303, continually, until whole cigarette consumableitem finished baking. Remove cigarette consumable item 2 by open the lid15, or just remove cigarette consumable item 2, and discard it away.

As shown in FIG. 11, this invention disclosed another low temperaturecigarette, which has similar structure mentioned above, includes smokingarticle housing 1, cigarette consumable item 2 and combustion device 3,one side of the housing 1 designed with an opening 10 for insertingcigarette consumable items, the other side placed with a puff mouthpiece 4 and the mouth piece has a puff hole 41. Combustion device 3connected to housing 1 by escapement system 5. The difference is thecombustion device 3 controlled by push button 306, escapement system 5controlled by push button 6. As shown in—FIGS. 13A and 13B, premixchamber 82 of combustion device 3 is made of ceramic and in cylindricalshape, on its wall 821 designed with multiple support air inlet hole822, combustion stable wire 824 placed near flame nozzle 823.

In this invention, escapement system 5 and push button 6 connected topawl 502 and rack 501 to complete step movement. When user press pushbutton 306, stop valve 304 will open, piezoelectric ceramic 308triggered and generated high voltage. Based on the Bernoulli Equation,propane and butane gas ejected from nozzle drag combustion supportingair into premix chamber, ignited by electrical arc. Once the push button306 pressed, the ignition process triggers, from FIGS. 12A, 12B, 12C,12D and 12E is the escapement system theory, by pressing push button 6,the escapement system and its pawl 502, rack 501 will push combustionchamber 3 move to next high-temperature gas path 7 towards puffing mouthpiece 4 to complete the section baking process. Based on theorymentioned above, technicians in this field can design thehigh-temperature gas spread path from perpendicular to the long axis ofcigarette consumable item to parallel to the long axis of cigaretteconsumable item, by multiple partitions which placed along thecircumferential direction of cigarette consumable item to formhigh-temperature gas spread path, such path paralleled with cigaretteconsumable item, 3-10 high-temperature gas spread path circumferentialaround cigarette consumable item, controlled by a kind of revolvingescapement system to make high-temperature gas spread path aimcombustion chamber.

In the following example, optimized the structure once more, removed theescapement system, and replaced the cigarette consumable items toaerosol generation consumable items. The aerosol generation consumableitems have metal or plastic housing, filled with aerosol generationliquid, such aerosol generation liquid includes but not only propyleneglycol, glycerin, nicotine and tobacco extract, flavor, water, and inthe alumina powder mixture composed of one or more of the following, andusing heat resistance fiber wick or mat to conduct liquid by capillaryeffect.

As shown in FIG. 14, this invention provides a smoking article, itshousing in rod shape, made of heat resistant resin, glass, metal, etc.It has upper housing 701 and lower housing 704, connection between thesetwo could be threaded connection, plug and other appropriate activities,inside of the upper housing 701 is combustion zone, placed combustiondevice with gas charging valve and gas adjust valve 714, gas tank 713filled with liquid propane and butane, gas nozzle 715, piezoelectricceramic or high frequency device 711, high voltage ignition wire 712 andpush button 716, such push button 716 optimized on the wall of housing701, gas nozzle connected to premix chamber 83, premix chamber optimizedwith combustion stable wire, premixed gas combust in heat collector 61,heat collector 61 rounded by flame muffler 706, heat collected by heatcollector 61 released to aerosol generation consumable items. Upperhousing 701 designed with support air inlet hole 20 and waste gasexhaust hole 30.

In FIG. 15, inside lower housing 704 is aerosol generation zone, aerosolgeneration consumable items placed in it, one side of lower housing 704connected to upper housing 701, the other side is puff mouth piece 705or connected to removable puff mouth piece 705, puff mouth piece 705designed with puff hole, aerosol generation zone in upper housing 701designed with puff air inlet hole 40, there is no air flow betweenaerosol generation zone and combustion zone, only heat transfer occurs.Aerosol generation consumable items designed with liquid conductiondevice, such conduction device has air flow path 723. In this example,liquid conduction device is made of heat resistant fiber wick 721, twoending of liquid conduction wick 721immerge into aerosol generationliquid 702.

Optional heat collectors as shown in FIGS. 16A, 16B, 16C and 16D. Inthese heat collectors, 61, 62, 63 and 64 are made of heat resistantmetal in cylindrical shape, on its side wall 611, 621, 631 and 641designed with air path hole 612, 622, 632 and 642, at the bottomdesigned with heat release part 614, 634, and 644 (heat releasing partof heat collector 62 not shown in FIG. 16B), these heat releasing partconnected to aerosol generation consumable item's liquid conductiondevice. The differences of these heat collectors are their insidestructure and filling material, heat collector 61 and 62 usingmulti-fence structure, as shown figure, multi metal strip paralleledwith space in between, or multi metal column in ring shape with space inbetween, optimized, metal strip with different height from outside toinside; as shown in figure, heat collector 63 filled with metal foam ormetal fiber 633, heat collector 64 filled with metal mat, premixed gaswill combust in those small space in metal foam and fiber and mat,that's called premixed flameless combustion.

When user press push button 716, wave shaped dual metal sheet premixchamber 83, inside wave shaped premix chamber 83 form premixed gasignited by arc combust in flameless inside heat collector 61. Liquidconduction wick 721 absorbs heat from heat collector and generateaerosol, aerosol cooled by air from puff inlet air hole 40 and puffed bysmoker.

Similar to above mentioned theory, as shown in FIG. 17 and FIG. 18, thisinvention provides a smoking article, such smoking article's housing ispistol liked, easier for holding. Smoking article has upper housing 901and lower housing 904, they can be connected and removed, upper housing901 placed with combustion device, which has gas charging valve, gasflow adjust valve 914, fuel tank 913, gas nozzle 915, piezoelectricceramic or high frequency device 911, high voltage wire 912 and pushbutton 916, push button 916 optimized placed at the front of upperhousing 901, gas nozzle connected to premix chamber 84, premix chamberdesigned with combustion stable wire, the premix chamber is made ofceramic.

Premix gas combust in heat collector 61, heat collector 61 rounded withflame muffler, heat released through heat releasing unit from heatcollector 61 to heat aerosol generation consumable item. Upper housing901 designed with support air inlet hole 50 and multiple waste gasexhaust hole 60, upper housing also designed with puff air inlet hole70.

Lower housing 904 placed with aerosol generation consumable items, atthe end of it designed with puff mouth piece 905. Aerosol generationconsumable items designed with air flow path 923. In this example,liquid conduction device is made of heat resistant fiber mat 921, twoend point of liquid conduction mat 921 attached to fiber column 902absorbed aerosol generation liquid.

As shown in FIG. 19 and FIG. 20, this example provides a simplifiedsmoking article design of heating cigarette consumable item by usingmetal foil like nickel foil to replace permanent heat collection device.A smoking article device including housing 1101, combustion device,aerosol generation consumable item on housing 1104; like previousexamples, combustion device using propane or butane premixed with airbefore combustion, combustion device designed with gas refill port andgas flow valve 1114, fuel tank with butane or propane 1113, gas nozzle1115, piezoelectric ceramic or high frequency device 1111, high voltageignition wire 1112 and push button 1116. Heat from combustiontransferred to aerosol generation consumable item 1104, aerosolgeneration consumable item 1104 filled with aerosol generation material1126. Smoking device housing is divided by combustion zone and aerosolgeneration zone. Combustion zone placed with supporting air inlet 20 andat least one waste gas exhaust 30 for exhausting combustion waste gas.Aerosol generation zone placed with puff air inlet path 1118 and puffaerosol outlet path 1125. There is no connection between combustion zoneand aerosol generation zone, to prevent waste gas cause damage tosmokers' health. Combustion device placed in combustion zone, premixedgas combusts in premix chamber 1117, such aerosol generation consumableitem placed in aerosol generation zone, heat from combustion transferredto aerosol generation consumable item by heat collection foil 1124.Structure of metal foil heat collection device 1124 optimized shapedclosely attached with fiber 1123, place the metal foil heat collectiondevice in front of aerosol generation consumable item, the shape couldbe but not limited a hollow, to place the inside of the hollow closelyattach with heat resistance fiber 1123.

In this example, heat collector 1124 could be made of metal foil likenickel foil and shaped in cone shape, heat resistance soft part silicon1112 seal it with aerosol generation consumable item 1104 at heatresistance fiber 1123, compress the cone shaped heat collector 1124 tomake it closely attached with heat resistance fiber 1123 to transferheat fast. Once the aerosol generation consumable item 1104 inserts insmoking article 1101, top point of heat collector 1124 placed close tothe premix chamber 1117, premix chamber 1117 surrounded by flame mufflernet 1106. The top of cone shaped heat collector 1124 could be designedround or flat, to increase the contact area of flame, furthermore toincrease the aerosol generation speed, optimized a bullet head shape.The space between cone shaped heat collector 1124 and premix chamber1117 is combustion zone, space between heat collector 1124 and heatresistance fiber 1123 is aerosol generation zone, the combustion zoneand aerosol generation zone separated by heat collector 1124. Thehousing of aerosol generation consumable item 1104 designed with an airinlet path 1118, such air inlet path 1118 connects outside air and spacein heat collector, such structure refers to current e-cigarette'ssimilar structure, place an outside inlet air path 1118 in aerosolgeneration zone, to cool down and from aerosol, meanwhile, such aerosolgeneration consumable item 1104 also designed with a puff path 1125.Press push button 1116, piezoelectric or high frequency device 1111ignite premixed gas in premix chamber 1117 generates flame, cone shapedheat collection device transfer heat to heat resistance fiber 1123,liquid in heat resistance fiber 1123 transferred to aerosol, aerosolpuffed out by path 1125 and mouth piece 1127. This design has anadvantage is fast heat transfer without thermal inertia, heat resistancemetal foil heat collector and aerosol generation consumable item 1104could be disposed together, no carbonyl from repeated usage of heatcollector.

As shown in FIG. 21, this example provides a simplified smoking articledesign of heating cigarette consumable items. The housing is in rodshape, made of heat resistant resin, glass, metal, etc. It has fronthousing 1001 and back housing 1004, separated by partition, space insidefront housing 1001 is combustion zone, combustion device placed inside,combustion device includes gas charging valve and gas flow adjust valve1014, tank filled with propane and butane 1013, gas nozzle 1015,piezoelectric ceramic or high frequency 1011, high voltage ignition wire1012 and push button 1016, the push button optimized designed on thefront housing 1001, as nozzle connected to premix chamber 1017, premixchamber optimized with combustion stable wire, premixed gas combust inheat collector 1014, heat collector 1014 rounded by flame muffler 1006,front housing 1001 designed with support air inlet hole 20 and waste gasexhaust hole 30. Back housing 1004 is aerosol generation zone; there isno air connection between aerosol generation zone and combustion zone.Cigarette consumable item 1021 insert and locate in silicon tube 1020,filter part of cigarette consumable item 1021 outside the silicon tube,easier for puff. Inside diameter of the silicon tube optimized to easierreplacing and seal. As an optimized example, inside the back housingdesigned with heat insulation layer, to reduce heat release.

As shown in FIG. 21 and FIG. 22 the characteristic of this example isspiral air flow path design. When smoker puffs, air flows into thespiral air flow path through opening 1018, the spiral air flow pathattached with heat releasing part of heat collector to heat air flowsin, high temperature air flows out of the spiral air flow path 1019 andtargeting cigarette consumable item 1021 to heat and generate aerosol,at the same time aerosol could be puffed out by user.

As another solution for above example, FIG. 23 and FIG. 24 provides asmoking article, which is has removable smoking mouth piece 1023,connection could be but not limited to screw thread or nested. In thisfigure silicon tube 1020 placed in back housing, opening of silicon tube1020 is horn shaped, make it easier to insert cigarette consumable items1021. By connecting mouth piece 1023, mouth piece will squeeze theopening of silicon tube 1020 to make it deformation, results in silicontube attaching to the cigarette consumable item tightly, to form a goodseal and hold, makes air could not flow around the cigarette but onlythrough the cigarette. Remove the mouth piece, the silicon tube alsoreleased, makes it easier to replace cigarette consumable item 1021.

The invention is not limited to the implementation of above examples.The above description of the specific implementation ways to explainthis invention involved technical solutions. The specific implementationof the above ways used to reveal the best implementation method of theinvention and to make technician in the field of application of theinvention to achieve the purpose of the invention. Based on theinvention revealed obvious transform or alternative should be consideredin the scope of protection for the invention.

What is claimed is:
 1. A gas heating smoking article, comprising: asmoking article housing, a combustion device attached on the housing,and a plurality of cigarette consumable items; wherein the combustiondevice premixes a propane or a butane with air before a combustion toobtain a premixed gas, and a heat generated from the combustion istransferred to an air flow path to heat an air inside the air flow pathto obtain a high temperature air; wherein the high temperature air heatsthe plurality of cigarette consumable items to generate an aerosol;wherein the combustion device and the plurality of cigarette consumableitems are placed in a combustion zone and an aerosol generation zone,and there is no air flow between the combustion zone and the aerosolgeneration zone.
 2. The gas heating smoking article of claim 1, whereinthe combustion device comprises a heat collector, and the premixed gascombusts in the heat collector to generate the heat.
 3. The gas heatingsmoking article of claim 2, wherein the air flow path is spiral shaped,and the air flow path comprises an inlet air hole connected to anoutside of the smoking article housing.
 4. The gas heating smokingarticle of claim 1, wherein the gas heating smoking article furthercomprises a flame retardant and a thermal insulation layer.
 5. The gasheating smoking article of claim 1, wherein an end part of the smokingarticle housing is provided with a silicon tube for inserting theplurality of cigarette consumable items, wherein a puff mouth piece ofthe gas heating smoking article is outside the silicon tube; wherein thesilicon tube has an unfold opening for inserting the plurality ofcigarette consumable items; wherein the puff mouth piece compresses theunfold opening of the silicon tube to make the silicon tube shrink andhold the plurality of cigarette consumable items to present a goodsealing.
 6. The gas heating smoking article of claim 1, wherein thesmoking article housing is provided with a removable puff mouth piece,the plurality of cigarette consumable items are inserted into thesmoking article housing or placed in the removable puff mouth piece. 7.The gas heating smoking article of claim 1, wherein the combustiondevice comprises a heat collection system, the heat collection system isa cellular structure, the premixed gas combusts in the heat collectionsystem with or without flame, the heat collection system is providedwith a plurality of air flow holes on its side wall, and a heat releaseunit is provided at a close end of the heat collection system.
 8. Thegas heating smoking article of claim 7, wherein the heat collectionsystem is designed as multi-fence metal column, filled with metal foammetal column or filled with metal fiber mat metal column.
 9. The gasheating smoking article of claim 2, wherein a flame muffler net isplaced between the heat collector and the smoking article housing. 10.The gas heating smoking article of claim 1, wherein the combustiondevice includes a combustion chamber, an ignition device, a gas flowvalve, a gas recharge port, a control switch and a premix chamber, thepremix chamber is designed with a combustion supporting air inlet and anozzle, flame premixed with air flows into the heat collector by thenozzle.
 11. The gas heating smoking article of claim 10, wherein thepremix chamber is made of heat resistant ceramic, a side wall of thepremix chamber is designed with a plurality of waste gas outlets; or thepremix chamber is made of a dual wave shaped metal sheet, the dual waveshaped metal sheet is configured to be extended and press to close anair flow valve, and the side wall of the premix chamber is designed withthe plurality of waste gas outlets.
 12. The gas heating smoking articleof claim 2, wherein the smoking article housing is provided with aremovable puff mouth piece, the plurality of cigarette consumable itemsare inserted into the smoking article housing or placed in the removablepuff mouth piece.
 13. The gas heating smoking article of claim 3,wherein the smoking article housing is provided with a removable puffmouth piece, the plurality of cigarette consumable items are insertedinto the smoking article housing or placed in the removable puff mouthpiece.
 14. The gas heating smoking article of claim 4, wherein thesmoking article housing is provided with a removable puff mouth piece,the plurality of cigarette consumable items are inserted into thesmoking article housing or placed in the removable puff mouth piece. 15.The gas heating smoking article of claim 4, wherein the combustiondevice comprises a heat collection system, the heat collection system isa cellular structure, the premixed gas combusts in the heat collectionsystem with or without flame, the heat collection system is providedwith a plurality of air flow holes on its side wall, and a heat releaseunit is provided at a close end of the heat collection system.
 16. Thegas heating smoking article of claim 5, wherein the combustion devicecomprises a heat collection system, the heat collection system is acellular structure, the premixed gas combusts in the heat collectionsystem with or without flame, the heat collection system is providedwith a plurality of air flow holes on its side wall, and a heat releaseunit is provided at a close end of the heat collection system.
 17. Thegas heating smoking article of claim 6, wherein the combustion devicecomprises a heat collection system, the heat collection system is acellular structure, the premixed gas combusts in the heat collectionsystem with or without flame, the heat collection system is providedwith a plurality of air flow holes on its side wall, and a heat releaseunit is provided at a close end of the heat collection system.
 18. Thegas heating smoking article of claim 3, wherein a flame muffler net isplaced between the heat collector and the smoking article housing. 19.The gas heating smoking article of claim 2, wherein the combustiondevice includes a combustion chamber, an ignition device, a gas flowvalve, a gas recharge port, a control switch and a premix chamber, thepremix chamber is designed with a combustion supporting air inlet and anozzle, flame premixed with air flows into the heat collector by thenozzle.
 20. The gas heating smoking article of claim 3, wherein thecombustion device includes a combustion chamber, an ignition device, agas flow valve, a gas recharge port, a control switch and a premixchamber, the premix chamber is designed with a combustion supporting airinlet and a nozzle, flame premixed with air flows into the heatcollector by the nozzle.